package threading;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: WHY
 * Date: 2023-03-17
 * Time: 20:47
 */
//线程安全问题

class Counter1{
    private Object locker=new Object();
    private int count =0;
    public void add(){
        synchronized (locker){
            count++;
        }

    }
    public int get(){
        return count;
    }
}
public class ThreadDemo13 {

    public static void main(String[] args) throws InterruptedException {
        Counter1 counter=new Counter1();
        Thread t1=new Thread(()->{
            for(int i=0;i<5000;i++){
                    counter.add();
            }
        });
        Thread t2=new Thread(()->{
            for(int i=0;i<5000;i++){
                counter.add();
            }
        });
        t1.start();
        t2.start();

        t1.join();
       t2.join();
        System.out.println(counter.get());
    }
    
}
